Spongy Brakes

[Jeff Dodson]

Alright I got a question i know was addressed on here before but I could not find it in the search.

I just replaced all the steering arms and then yesterday, I had to do a complete front brake job. New pads, new cailpers and repacked the bearings. The front end is great now. My problem is my brake pedal is still spongy. I bledd all four wheels. About six months ago, I replaced the master cylinder think this was the problem and it was not. I am ready to fix it now. I remember someone saying something about a bigger master cylinder. If so what did it come off of. What year of truck, what part no. etc...

Thanx for the reply

Jeff

 

[Exekiel69]

You can also install a Hydrobooster comes on f450's, also have You adjusted the rear brakes?

 

[Dsl_Dog_Treat]

Jeff,
Here's a thread that may provide some more info and a few other things to check as well.
Turned out to be a combination of the vacuum booster then the vacuum pumps failing one right after the other.

I have good brakes now!

Hope this helps ya.

 

[jrisingmoon]

The rear wheel cylinders might be going, too.